Well, i don't see the answer on the listed so i will simply type it. The opposite of 5 1/5 is -5 1/5.
If you are looking for the reciprocal, the answer is 5/26(i'm adding this in too since reciprocals are often confused with opposites where i live).
Consider, pls, this option.
The first one. 1 machine= x 5 mach.=5x. Total time is thus 5x+2/3=1 3/4h. Simply find x by doing 105min-40min/5 and that is 13.
Can you help I have tried 4 times